/*
 * ECARX Technology Limited is the owner of the copyright and the trade secret of this software.
 * Without permission, no one has the right to obtain, disclose or use this software in any way.
 */

package com.ecarx.systemui.plugin.ui.dialog.calendar;

import com.ecarx.systemui.plugin.utils.LogUtils;

/**
 * 农历计算方法
 */
public final class LunarUtil {

    private static final String TAG = "LunarUtilPlugin";

    /**
     * 用来表示1900年到2099年间农历年份的相关信息，共24位bit的16进制表示，其中：
     * 1. 前4位表示该年闰哪个月；
     * 2. 5-17位表示农历年份13个月的大小月分布，0表示小，1表示大；
     * 3. 最后7位表示农历年首（正月初一）对应的公历日期。
     * <p/>
     * 以2014年的数据0x955ABF为例说明：
     * 1001 0101 0101 1010 1011 1111
     * 闰九月 农历正月初一对应公历1月31号
     */
    private static final int[] LUNAR_INFO = {
            0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,//1900-1909
            0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,//1910-1919
            0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,//1920-1929
            0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,//1930-1939
            0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,//1940-1949
            0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0,//1950-1959
            0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,//1960-1969
            0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 0x195a6,//1970-1979
            0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,//1980-1989
            0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,//1990-1999
            0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,//2000-2009
            0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,//2010-2019
            0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,//2020-2029
            0x05aa0, 0x076a3, 0x096d0, 0x04afb, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,//2030-2039
            0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0,//2040-2049
            0x14b63, 0x09370, 0x049f8, 0x04970, 0x064b0, 0x168a6, 0x0ea50, 0x06b20, 0x1a6c4, 0x0aae0,//2050-2059
            0x0a2e0, 0x0d2e3, 0x0c960, 0x0d557, 0x0d4a0, 0x0da50, 0x05d55, 0x056a0, 0x0a6d0, 0x055d4,//2060-2069
            0x052d0, 0x0a9b8, 0x0a950, 0x0b4a0, 0x0b6a6, 0x0ad50, 0x055a0, 0x0aba4, 0x0a5b0, 0x052b0,//2070-2079
            0x0b273, 0x06930, 0x07337, 0x06aa0, 0x0ad50, 0x14b55, 0x04b60, 0x0a570, 0x054e4, 0x0d160,//2080-2089
            0x0e968, 0x0d520, 0x0daa0, 0x16aa6, 0x056d0, 0x04ae0, 0x0a9d4, 0x0a2d0, 0x0d150, 0x0f252,//2090-2099
            0x0d520
    };


    private final static int[] LUNAR_MONTH_DAYS = {1887, 0x1694, 0x16aa, 0x4ad5, 0xab6, 0xc4b7, 0x4ae, 0xa56, 0xb52a, 0x1d2a,
            0xd54, 0x75aa, 0x156a, 0x1096d, 0x95c, 0x14ae, 0xaa4d, 0x1a4c, 0x1b2a, 0x8d55, 0xad4, 0x135a, 0x495d, 0x95c,
            0xd49b, 0x149a, 0x1a4a, 0xbaa5, 0x16a8, 0x1ad4, 0x52da, 0x12b6, 0xe937, 0x92e, 0x1496, 0xb64b, 0xd4a, 0xda8,
            0x95b5, 0x56c, 0x12ae, 0x492f, 0x92e, 0xcc96, 0x1a94, 0x1d4a, 0xada9, 0xb5a, 0x56c, 0x726e, 0x125c, 0xf92d,
            0x192a, 0x1a94, 0xdb4a, 0x16aa, 0xad4, 0x955b, 0x4ba, 0x125a, 0x592b, 0x152a, 0xf695, 0xd94, 0x16aa, 0xaab5,
            0x9b4, 0x14b6, 0x6a57, 0xa56, 0x1152a, 0x1d2a, 0xd54, 0xd5aa, 0x156a, 0x96c, 0x94ae, 0x14ae, 0xa4c, 0x7d26,
            0x1b2a, 0xeb55, 0xad4, 0x12da, 0xa95d, 0x95a, 0x149a, 0x9a4d, 0x1a4a, 0x11aa5, 0x16a8, 0x16d4, 0xd2da,
            0x12b6, 0x936, 0x9497, 0x1496, 0x1564b, 0xd4a, 0xda8, 0xd5b4, 0x156c, 0x12ae, 0xa92f, 0x92e, 0xc96, 0x6d4a,
            0x1d4a, 0x10d65, 0xb58, 0x156c, 0xb26d, 0x125c, 0x192c, 0x9a95, 0x1a94, 0x1b4a, 0x4b55, 0xad4, 0xf55b,
            0x4ba, 0x125a, 0xb92b, 0x152a, 0x1694, 0x96aa, 0x15aa, 0x12ab5, 0x974, 0x14b6, 0xca57, 0xa56, 0x1526,
            0x8e95, 0xd54, 0x15aa, 0x49b5, 0x96c, 0xd4ae, 0x149c, 0x1a4c, 0xbd26, 0x1aa6, 0xb54, 0x6d6a, 0x12da,
            0x1695d, 0x95a, 0x149a, 0xda4b, 0x1a4a, 0x1aa4, 0xbb54, 0x16b4, 0xada, 0x495b, 0x936, 0xf497, 0x1496,
            0x154a, 0xb6a5, 0xda4, 0x15b4, 0x6ab6, 0x126e, 0x1092f, 0x92e, 0xc96, 0xcd4a, 0x1d4a, 0xd64, 0x956c, 0x155c,
            0x125c, 0x792e, 0x192c, 0xfa95, 0x1a94, 0x1b4a, 0xab55, 0xad4, 0x14da, 0x8a5d, 0xa5a, 0x1152b, 0x152a,
            0x1694, 0xd6aa, 0x15aa, 0xab4, 0x94ba, 0x14b6, 0xa56, 0x7527, 0xd26, 0xee53, 0xd54, 0x15aa, 0xa9b5, 0x96c,
            0x14ae, 0x8a4e, 0x1a4c, 0x11d26, 0x1aa4, 0x1b54, 0xcd6a, 0xada, 0x95c, 0x949d, 0x149a, 0x1a2a, 0x5b25,
            0x1aa4, 0xfb52, 0x16b4, 0xaba, 0xa95b, 0x936, 0x1496, 0x9a4b, 0x154a, 0x136a5, 0xda4, 0x15ac};

    private final static int[] SOLAR = {1887, 0xec04c, 0xec23f, 0xec435, 0xec649, 0xec83e, 0xeca51, 0xecc46, 0xece3a,
            0xed04d, 0xed242, 0xed436, 0xed64a, 0xed83f, 0xeda53, 0xedc48, 0xede3d, 0xee050, 0xee244, 0xee439, 0xee64d,
            0xee842, 0xeea36, 0xeec4a, 0xeee3e, 0xef052, 0xef246, 0xef43a, 0xef64e, 0xef843, 0xefa37, 0xefc4b, 0xefe41,
            0xf0054, 0xf0248, 0xf043c, 0xf0650, 0xf0845, 0xf0a38, 0xf0c4d, 0xf0e42, 0xf1037, 0xf124a, 0xf143e, 0xf1651,
            0xf1846, 0xf1a3a, 0xf1c4e, 0xf1e44, 0xf2038, 0xf224b, 0xf243f, 0xf2653, 0xf2848, 0xf2a3b, 0xf2c4f, 0xf2e45,
            0xf3039, 0xf324d, 0xf3442, 0xf3636, 0xf384a, 0xf3a3d, 0xf3c51, 0xf3e46, 0xf403b, 0xf424e, 0xf4443, 0xf4638,
            0xf484c, 0xf4a3f, 0xf4c52, 0xf4e48, 0xf503c, 0xf524f, 0xf5445, 0xf5639, 0xf584d, 0xf5a42, 0xf5c35, 0xf5e49,
            0xf603e, 0xf6251, 0xf6446, 0xf663b, 0xf684f, 0xf6a43, 0xf6c37, 0xf6e4b, 0xf703f, 0xf7252, 0xf7447, 0xf763c,
            0xf7850, 0xf7a45, 0xf7c39, 0xf7e4d, 0xf8042, 0xf8254, 0xf8449, 0xf863d, 0xf8851, 0xf8a46, 0xf8c3b, 0xf8e4f,
            0xf9044, 0xf9237, 0xf944a, 0xf963f, 0xf9853, 0xf9a47, 0xf9c3c, 0xf9e50, 0xfa045, 0xfa238, 0xfa44c, 0xfa641,
            0xfa836, 0xfaa49, 0xfac3d, 0xfae52, 0xfb047, 0xfb23a, 0xfb44e, 0xfb643, 0xfb837, 0xfba4a, 0xfbc3f, 0xfbe53,
            0xfc048, 0xfc23c, 0xfc450, 0xfc645, 0xfc839, 0xfca4c, 0xfcc41, 0xfce36, 0xfd04a, 0xfd23d, 0xfd451, 0xfd646,
            0xfd83a, 0xfda4d, 0xfdc43, 0xfde37, 0xfe04b, 0xfe23f, 0xfe453, 0xfe648, 0xfe83c, 0xfea4f, 0xfec44, 0xfee38,
            0xff04c, 0xff241, 0xff436, 0xff64a, 0xff83e, 0xffa51, 0xffc46, 0xffe3a, 0x10004e, 0x100242, 0x100437,
            0x10064b, 0x100841, 0x100a53, 0x100c48, 0x100e3c, 0x10104f, 0x101244, 0x101438, 0x10164c, 0x101842,
            0x101a35, 0x101c49, 0x101e3d, 0x102051, 0x102245, 0x10243a, 0x10264e, 0x102843, 0x102a37, 0x102c4b,
            0x102e3f, 0x103053, 0x103247, 0x10343b, 0x10364f, 0x103845, 0x103a38, 0x103c4c, 0x103e42, 0x104036,
            0x104249, 0x10443d, 0x104651, 0x104846, 0x104a3a, 0x104c4e, 0x104e43, 0x105038, 0x10524a, 0x10543e,
            0x105652, 0x105847, 0x105a3b, 0x105c4f, 0x105e45, 0x106039, 0x10624c, 0x106441, 0x106635, 0x106849,
            0x106a3d, 0x106c51, 0x106e47, 0x10703c, 0x10724f, 0x107444, 0x107638, 0x10784c, 0x107a3f, 0x107c53,
            0x107e48};


    private static int getBitInt(int data, int length, int shift) {
        return (data & (((1 << length) - 1) << shift)) >> shift;
    }

    private static long solarToInt(int y, int m, int d) {
        m = (m + 9) % 12;
        y = y - m / 10;
        return 365L * y + y / 4 - y / 100 + y / 400 + (m * 306 + 5) / 10 + (d - 1);
    }

    private static int[] solarFromInt(long g) {
        long y = (10000 * g + 14780) / 3652425;
        long ddd = g - (365 * y + y / 4 - y / 100 + y / 400);
        if (ddd < 0) {
            y--;
            ddd = g - (365 * y + y / 4 - y / 100 + y / 400);
        }
        long mi = (100 * ddd + 52) / 3060;
        long mm = (mi + 2) % 12 + 1;
        y = y + (mi + 2) / 12;
        long dd = ddd - (mi * 306 + 5) / 10 + 1;
        int[] solar = new int[4];
        solar[0] = (int) y;
        solar[1] = (int) mm;
        solar[2] = (int) dd;
        return solar;
    }

    /**
     * 公历转农历 Solar To Lunar
     *
     * @param year  公历年
     * @param month 公历月
     * @param day   公历日
     * @return [0]农历年 [1]农历月 [2]农历日 [3]是否闰月 0 false : 1 true
     */
    @SuppressWarnings("all")
    public static int[] solarToLunar(int year, int month, int day) {
        LogUtils.d(TAG, "solarToLunar year:" + year + "--month:" + month + "--day:" + day);
        if (year < 1900) {
            year = 1900;
        }
        int[] lunarInt = new int[4];
        int index = year - SOLAR[0];
        int data = (year << 9) | (month << 5) | (day);
        int solar11;
        if (SOLAR[index] > data) {
            index--;
        }
        solar11 = SOLAR[index];
        int y = getBitInt(solar11, 12, 9);
        int m = getBitInt(solar11, 4, 5);
        int d = getBitInt(solar11, 5, 0);
        long offset = solarToInt(year, month, day) - solarToInt(y, m, d);

        int days = LUNAR_MONTH_DAYS[index];
        int leap = getBitInt(days, 4, 13);

        int lunarY = index + SOLAR[0];
        int lunarM = 1;
        int lunarD;
        offset += 1;

        for (int i = 0; i < 13; i++) {
            int dm = getBitInt(days, 1, 12 - i) == 1 ? 30 : 29;
            if (offset > dm) {
                lunarM++;
                offset -= dm;
            } else {
                break;
            }
        }
        lunarD = (int) (offset);
        lunarInt[0] = lunarY;
        lunarInt[1] = lunarM;
        lunarInt[3] = 0;

        if (leap != 0 && lunarM > leap) {
            lunarInt[1] = lunarM - 1;
            if (lunarM == leap + 1) {
                lunarInt[3] = 1;
            }
        }
        lunarInt[2] = lunarD;
        return lunarInt;
    }


    /**
     * 农历转公历
     *
     * @param lunarYear  农历年
     * @param lunarMonth 农历月
     * @param lunarDay   农历天
     * @param isLeap     是否是闰年 0 false : 1 true
     * @return [0]新历年 [1]新历月 [2]新历日 [3]是否闰月 0 false : 1 true
     */
    @SuppressWarnings("unused")
    public static int[] lunarToSolar(int lunarYear, int lunarMonth, int lunarDay, boolean isLeap) {
        LogUtils.d(TAG, "lunarToSolar year:" + lunarYear + "--lunarMonth:" + lunarMonth + "--lunarDay:" + lunarDay);
        if (lunarYear < 1900) {
            lunarYear = 1900;
        }
        int days = LUNAR_MONTH_DAYS[lunarYear - LUNAR_MONTH_DAYS[0]];
        int leap = getBitInt(days, 4, 13);
        int offset = 0;
        int loop = leap;
        if (!isLeap) {
            if (lunarMonth <= leap || leap == 0) {
                loop = lunarMonth - 1;
            } else {
                loop = lunarMonth;
            }
        }
        for (int i = 0; i < loop; i++) {
            offset += getBitInt(days, 1, 12 - i) == 1 ? 30 : 29;
        }
        offset += lunarDay;

        int solar11 = SOLAR[lunarYear - SOLAR[0]];

        int y = getBitInt(solar11, 12, 9);
        int m = getBitInt(solar11, 4, 5);
        int d = getBitInt(solar11, 5, 0);

        return solarFromInt(solarToInt(y, m, d) + offset - 1);
    }

    /**
     * 是否是闰年
     *
     * @param year year
     * @return 是否是闰年
     */
    public static boolean isLeapYear(int year) {
        return ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
    }

    /**
     * 数字转换为汉字月份
     *
     * @param month 月
     * @param leap  1==闰月
     * @return 数字转换为汉字月份
     */
    public static String numToChineseMonth(int month, int leap) {
        if (leap == 1) {
            return "闰" + MONTH_STR[month - 1];
        }
        return MONTH_STR[month - 1];
    }

    /**
     * 数字转换为农历节日或者日期
     *
     * @param day 日
     * @return 数字转换为汉字日
     */
    public static String numToChineseDay(int day) {
        return DAY_STR[day - 1];
    }

    /**
     * 获取某月的天数
     *
     * @param year  年
     * @param month 月
     * @return 某月的天数
     */
    public static int getMonthDaysCount(int year, int month) {
        int count = 0;
        //判断大月份
        if (month == 1 || month == 3 || month == 5 || month == 7
                || month == 8 || month == 10 || month == 12) {
            count = 31;
        }

        //判断小月
        if (month == 4 || month == 6 || month == 9 || month == 11) {
            count = 30;
        }

        //判断平年与闰年
        if (month == 2) {
            if (isLeapYear(year)) {
                count = 29;
            } else {
                count = 28;
            }
        }
        return count;
    }

    /**
     * 农历 year年month月的总天数，总共有13个月包括闰月
     *
     * @param year  农历年
     * @param month 农历月
     * @return 传回农历 year年month月的总天数
     */
    public static int daysInNLMonth(int year, int month) {
        if (year < 1900) {
            LogUtils.e(TAG, "year 太低了，不能低于1900年");
            year = 1900;
        }
        if ((LUNAR_INFO[year - 1900] & (0x10000 >> month)) == 0)
            return 29;
        else
            return 30;
    }

    private static final String[] MONTH_STR = new String[]{
            "正月",
            "二月",
            "三月",
            "四月",
            "五月",
            "六月",
            "七月",
            "八月",
            "九月",
            "十月",
            "冬月",
            "腊月"
    };

    private static final String[] DAY_STR = new String[]{
            "初一",
            "初二",
            "初三",
            "初四",
            "初五",
            "初六",
            "初七",
            "初八",
            "初九",
            "初十",
            "十一",
            "十二",
            "十三",
            "十四",
            "十五",
            "十六",
            "十七",
            "十八",
            "十九",
            "二十",
            "廿一",
            "廿二",
            "廿三",
            "廿四",
            "廿五",
            "廿六",
            "廿七",
            "廿八",
            "廿九",
            "三十"
    };


    /**
     * 返回传统农历节日
     * 除夕除外
     *
     * @param nlMonthAndDay 农历月农历日  正月初一
     * @return 返回传统农历节日
     */
    public static String getTraditionFestival(String nlMonthAndDay) {
        String festivalStr = "";
        for (String festival : TRADITION_FESTIVAL) {
            String[] split = festival.split("-");
            String monthAndDay = split[0];
            if (nlMonthAndDay.equals(monthAndDay)) {
                festivalStr = split[1];
                return festivalStr;
            }
        }
        return festivalStr;
    }

    private static String getString(int month, int day) {
        return (month >= 10 ? String.valueOf(month) : "0" + month) + (day >= 10 ? day : "0" + day);
    }

    /**
     * 获取公历节日
     *
     * @param month 公历月份
     * @param day   公历日期
     * @return 公历节日
     */
    public static String getSolarFestival(int month, int day) {
        String text = getString(month, day);
        String solar = "";
        for (String aMSolarCalendar : SOLAR_FESTIVAL) {
            if (aMSolarCalendar.contains(text)) {
                solar = aMSolarCalendar.replace(text, "");
                break;
            }
        }
        return solar;
    }

    private static final String[] TRADITION_FESTIVAL = new String[]{
            "正月初一-春节",
            "正月十五-元宵",
            "五月初五-端午",
            "七月初七-七夕",
            "八月十五-中秋",
            "九月初九-重阳"
    };

    private static final String[] SOLAR_FESTIVAL = new String[]{
            "0101元旦",
            "0214情人节",
            "0308妇女节",
            "0312植树节",
            "0315消权日",
            "0401愚人节",
            "0422地球日",
            "0501劳动节",
            "0504青年节",
            "0601儿童节",
            "0701建党节",
            "0801建军节",
            "0910教师节",
            "1001国庆节",
            "1031万圣节",
            "1224平安夜",
            "1225圣诞节"
    };


}
